| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 2 |
0.8%
|
| -7 | Does not apply (spontaneous) | 5 |
2.1%
|
| 1 | Yes | 108 |
45%
|
| 2 | No | 125 |
52.1%
|